Hari buys four bulbs of 10 watt, 20 watt, 40 watt and 60 watt power. Which one should he used as night bulb?

20 watt

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10 watt

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40 watt

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60 watt

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Solution

The correct option is B 10 watt
Night bulb are bulbs which are designed to use in the night light fixtures. Nightbulbs provide added comfort and security anywhere in your home. Bulbs with less power is used as the nightbulbs. So here, 10 watt bulb is used as the nightbulb.

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